Effect of Se application on photosynthesis, osmolytes and water relations in two durum wheat (Triticum durum L.) genotypes under drought stress

Acta Agriculturae Slovenica

Behzad SADEGHZADEH¹  Noushin SADEGHZADEH²  Roghieh HAJIBOLAND³ 

[1] Dryland Agricultural Research Institute (DARI), Maragheh, P.O. Box 119, Iran;Plant Science Department, University of Tabriz, 51666-14779 Tabriz, Iran;Plant Science Department, University of Tabriz, 51666-14779 Tabriz,Iran;

关键词: triticum durum;    hard wheat;    genotypes;    photosynthesis;    proline;    amino acids;    drought stress;    water use;    efficiency;    plant water relations;    selenium;    osmosis;    watering;   

DOI  :  10.14720/aas.2014.103.2.2

来源: DOAJ

【 摘 要 】

Effect of Se (as Na₂SeO₄ at final concentration of 10 µg l^-1) was studied in two durum wheat (Triticum durum L.) genotypes in perlite under drought conditions. Se treatment increased slightly biomass of both genotypes under drought but not under control conditions. Photosynthetic rate was depressed by drought while increased by Se treatments in both genotypes up to 2.3 fold. However, transpirational water loss was also enhanced in Se-treated plants under both well-watered and drought conditions. Se application resulted in higher concentrations of soluble proteins and free α-amino acids under drought conditions, but not proline. Our results indicated that Se application improves some physiological parameters such as photosynthesis, accumulation of osmolyes and water use efficiency but did not change significantly plants biomass or water relation parameters.

【 授权许可】

Unknown